I'm pretty sure they had the GV room category when we booked in August?
But I got a free upgrade to pool view. However I think GV room can mean a view of grassy areas, woods, etc. Basically you are guaranteed not a parking lot view.
To me, view isn't particularly important at a moderate because there isn't a balcony to enjoy it on, but I don't want to be by the parking lot, being woken up by cars coming & going early or late. So it's worth the little extra for a GV to me. I'd never pay for a water or river view.